RobBarnum

The 650L and the 600 are very much the same the Cams are very close the 650L may have about 3 more degr of lift than the 600. so changing to a 600 cam will be very little change. You are better off going to an after market cam as well as a high comp piston. the stock compresion ratio is very low. If you need help with thies parts feel free to give me a call.Thanks Rob Barnum. 760-868-8097